Efficient and energy-saving compressor system

Abstract

An efficient and energy-saving compressor system comprises a first-stage compressor and a second-stage compressor, the first-stage compressor is an oil-free air compressor, the second-stage compressor is a steam compressor, the efficient and energy-saving compressor system further comprises a first-stage heat exchanger, the first-stage heat exchanger is provided with a first heat source channel and a first medium channel, and the cold end of the first medium channel of the first-stage heat exchanger is used for inputting normal-temperature water; the hot end of a first heat source channel of the first-stage heat exchanger communicates with an exhaust port of the oil-free air compressor and is used for inputting stored energy exhaust discharged by the exhaust end of the oil-free air compressor, and the cold end of the first heat source channel of the first-stage heat exchanger is used for outputting the stored energy exhaust subjected to heat exchange and cooling. And the hot end of a first medium channel of the first-stage heat exchanger communicates with the steam compressor and is used for outputting saturated steam after heat exchange and heating. According to the efficient and energy-saving compressor system, heat generated in the air compression process can be recycled, the energy utilization rate is increased, the service life of a machine is prolonged, and the production and use cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor technical field, concretely relates to a kind of high-efficiency energy-saving compressor systems. BACKGROUND

[0002] Air compressor can produce a large amount of heat in the working process, the heat generated by oil-free air compressor mainly exists in compressed gas, resulting in the exhaust temperature of oil-free air compressor will usually rise to hundreds of degrees Celsius. If the high-temperature and high-pressure gas of exhaust end is directly discharged, energy will be wasted, and the energy utilization rate is low. On the other hand, too high exhaust temperature can also harm the machine and reduce the service life of the machine. In order to ensure the normal operation of the air compressor, especially the multi-stage air compressor system, a cooling system needs to be set, such as the air compressor cooling system disclosed in the Chinese utility model patent with the authorization announcement number CN215170598U. Setting a cooling system for an air compressor not only cannot utilize the heat generated during the air compression process, but also increases the production and use cost.

[0003] Therefore, it is urgent to design a high-efficiency energy-saving compressor system to recover and utilize the heat generated during the air compression process, improve the energy utilization rate and the service life of the machine, and reduce the production and use cost. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a high-efficiency energy-saving compressor system that can recover and utilize the heat generated during the air compression process, improve the energy utilization rate and the service life of the machine, and reduce the production and use cost.

[0005] The technical solution of the utility model is: a high-efficiency energy-saving compressor system, comprising a primary compressor and a secondary compressor, the primary compressor is an oil-free air compressor, the secondary compressor is a steam compressor, further comprising a primary heat exchanger, the primary heat exchanger is provided with a first heat source channel and a first medium channel, the cold end of the first medium channel of the primary heat exchanger is used for inputting normal-temperature water, the hot end of the first heat source channel of the primary heat exchanger is communicated with the exhaust port of the oil-free air compressor, for inputting the energy storage exhaust discharged by the exhaust end of the oil-free air compressor, the cold end of the first heat source channel of the primary heat exchanger is used for outputting the energy storage exhaust after heat exchange and cooling, and the hot end of the first medium channel of the primary heat exchanger is communicated with the steam compressor, for outputting the saturated water vapor after heat exchange and heating.

[0006] After adopting the above structure, the utility model has the following advantages:

[0007] The utility model discloses an efficient and energy-saving compressor system combines oil-free air compressor and steam compressor, utilizes heat exchanger to make the high temperature and high pressure gas of oil-free air compressor discharge and low temperature normal temperature water carry out heat exchange to obtain saturated water vapor to provide steam compressor use, therefore the heat generated in the compression process of oil-free air compressor is not directly discharged, but utilizes the first heat exchanger to convert into the high temperature water vapor required by steam compressor, realizes the recycling of oil-free air compressor heat energy, improves the energy utilization, and has the advantages of high efficiency and energy saving, second, not only saves the cooling system of oil-free air compressor, but also solves the problem of exhaust temperature being too high in the compression process of oil-free air compressor, improves the service life of machine, and reduces production and use cost, third, the high temperature saturated water vapor is obtained by the heat exchange mode instead of traditional electric heating mode, further reduces production and use cost, improves economic benefit, and is more efficient and energy-saving.

[0008] As preferred, it further comprises a secondary heat exchanger provided with a second heat source channel and a second medium channel, the cold end of the second medium channel of the secondary heat exchanger is used for inputting normal temperature intake air, the hot end of the second heat source channel of the secondary heat exchanger is communicated with the cold end of the first heat source channel of the primary heat exchanger, used for inputting energy storage exhaust gas after primary heat exchange by the primary heat exchanger, the cold end of the second heat source channel of the secondary heat exchanger is used for outputting energy storage exhaust gas after secondary heat exchange by the secondary heat exchanger, and the hot end of the second medium channel of the secondary heat exchanger is communicated with the intake port of the oil-free air compressor, used for outputting intake air after heat exchange by the secondary heat exchanger. Since the energy storage exhaust gas discharged from the exhaust end of the oil-free air compressor may have excess heat after heating water into saturated water vapor, the excess heat is introduced into the secondary heat exchanger to further heat the intake air of the oil-free air compressor, so that the heat is not wasted, but the waste heat is stored again in the compressed gas with the intake air and returned to the primary heat exchanger, so that the heat generated by the oil-free air compressor can be recycled in the system, the energy utilization rate is high, and more sufficient saturated water vapor can be obtained.

[0009] As preferred, the oil-free air compressor is a water injection type oil-free air compressor, further comprising a water vapor separation assembly, the water vapor separation assembly is connected with the exhaust end of the oil-free air compressor, and the water vapor separation assembly is used for separating the exhaust gas of the oil-free air compressor into water and air.

[0010] The water-vapor separation assembly is provided with a water-vapor mixture inlet, a liquid outlet and a gas outlet, the water-vapor mixture inlet of the water-vapor separation assembly is connected with the cold end of the second heat source channel of the secondary heat exchanger, and is used for separating the water-vapor mixture discharged from the cold end of the second heat source channel to obtain pure high-pressure gas and filtered water. The water-vapor mixture is obtained by mixing the compressed gas and water, and the specific heat capacity of the water-vapor mixture is higher than that of pure gas, so that the water-injected oil-free air compressor can operate at a high pressure ratio and can overcome the harm caused by the excessively high exhaust temperature to the machine; since the water-injected oil-free air compressor produces the water-vapor mixture, the pure high-pressure gas and the filtered water can be separated after the water-vapor separation assembly.

[0011] As a preferred, a steam chamber is further connected between the hot end of the first medium channel of the primary heat exchanger and the steam compressor, and the steam chamber is provided with a temperature detection assembly and an auxiliary heating assembly. The steam chamber can store saturated water vapor for use by the steam compressor, and the auxiliary heating assembly can further heat the saturated water vapor when the energy storage exhaust temperature is insufficient to heat ordinary water to form saturated water vapor. The saturated water vapor is mainly generated by the heat generated during the compression of the oil-free air compressor, and the auxiliary heating assembly only heats when the temperature detection assembly detects that the temperature is insufficient, so that the advantages of high efficiency and energy saving are still achieved, and the yield of water vapor is improved.

[0012] As a preferred, a steam chamber is further connected between the hot end of the first medium channel of the primary heat exchanger and the steam compressor, and the steam chamber is provided with a temperature detection assembly and an auxiliary heating assembly. The steam chamber can store saturated water vapor for use by the steam compressor, and the auxiliary heating assembly can further heat the saturated water vapor when the energy storage exhaust temperature is insufficient to heat ordinary water to form saturated water vapor. The saturated water vapor is mainly generated by the heat generated during the compression of the oil-free air compressor, and the auxiliary heating assembly only heats when the temperature detection assembly detects that the temperature is insufficient, so that the advantages of high efficiency and energy saving are still achieved, and the yield of water vapor is improved.

[0013] steam chamber, and the liquid outlet of the water-vapor separation assembly is connected with the steam chamber. The steam chamber can store saturated water vapor for use by the steam compressor, and the auxiliary heating assembly can further heat the saturated water vapor when the energy storage exhaust temperature is insufficient to heat ordinary water to form saturated water vapor. The saturated water vapor is mainly generated by the heat generated during the compression of the oil-free air compressor, and the auxiliary heating assembly only heats when the temperature detection assembly detects that the temperature is insufficient, so that the advantages of high efficiency and energy saving are still achieved, and the yield of water vapor is improved. In addition, the water in the water-injected oil-free air compressor can be recovered and supplemented to the steam chamber for heating to generate saturated water vapor, so that the energy is recycled and used, and the yield of saturated water vapor is further improved.

[0014] As a preferred, the cold end of the first medium channel of the primary heat exchanger is further provided with a booster pump for inputting pressurized ordinary water.

[0015] Warm water. Usually normal temperature water is heated to 100℃ saturated water vapor under no positive pressure, and saturated water vapor with temperature higher than 100℃ can be obtained by increasing water pressure through a booster pump. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Functional block diagram of the high-efficiency and energy-saving compressor system in Example One;

[0017] Figure 2 Functional block diagram of the high-efficiency and energy-saving compressor system in Example Two;

[0018] Figure 3 Functional block diagram of the high-efficiency and energy-saving compressor system in Example Three;

[0019] Figure 4 Functional block diagram of the high-efficiency and energy-saving compressor system in Example Four;

[0020] Figure 5 Functional block diagram of the high-efficiency and energy-saving compressor system in Example Five;

[0021] In the figure: 1 - oil-free air compressor, 2 - first heat exchanger, 3 - first heat source channel, 4 - first medium channel, 5 - exhaust port of the oil-free air compressor, 6 - cold end of the first medium channel, 7 - hot end of the first medium channel, 8 - hot end of the first heat source channel, 9 - cold end of the first heat source channel, 10 - second heat exchanger, 11 - second heat source channel, 12 - second medium channel, 13 - cold end of the second medium channel, 14 - hot end of the second medium channel, 15 - hot end of the second heat source channel, 16 - cold end of the second heat source channel, 17 - air inlet of the oil-free air compressor, 18 - water vapor separation assembly, 19 - water vapor mixing inlet, 20 - liquid outlet, 21 - gas outlet, 22 - oil outlet, 23 - oil return port, 24 - steam chamber, 25 - temperature detection assembly, 26 - auxiliary heating assembly, 27 - booster pump, 28 - steam compressor. DETAILED DESCRIPTION

[0022] The utility model will be further explained in combination with the drawings and examples. EXAMPLE

[0023] As Figure 1As shown, a high-efficiency and energy-saving compressor system includes a primary compressor and a secondary compressor. The primary compressor is an oil-free air compressor 1, and the secondary compressor is a steam compressor 28. It also includes a primary heat exchanger 2, which has a first heat source channel 3 and a first medium channel 4. The cold end 6 of the first medium channel 4 of the primary heat exchanger 2 is used to input room temperature water. The hot end 8 of the first heat source channel 3 of the primary heat exchanger 2 is connected to the exhaust port 5 of the oil-free air compressor 1 and is used to input the energy-storing exhaust gas discharged from the exhaust port of the oil-free air compressor 1. The cold end 9 of the first heat source channel 3 of the primary heat exchanger 2 is used to output the energy-storing exhaust gas after heat exchange and cooling. The hot end 7 of the first medium channel 4 of the primary heat exchanger 2 is connected to the steam compressor 28 and is used to output saturated steam after heat exchange and heating. The oil-free air compressor 1, the primary heat exchanger 2, and the steam compressor 28 can be constructed using existing technologies.

[0024] This embodiment of the high-efficiency and energy-saving compressor system combines an oil-free air compressor 1 with a steam compressor 28. A heat exchanger is used to exchange heat between the high-temperature, high-pressure gas discharged from the oil-free air compressor 1 and low-temperature room-temperature water, thereby obtaining saturated steam for the steam compressor 28. Therefore, the heat generated during the compression process of the oil-free air compressor 1 is not directly discharged, but is converted into high-temperature steam required by the steam compressor 28 using the first heat exchanger. This achieves the recovery and utilization of the heat energy of the oil-free air compressor 1, improving energy utilization efficiency and offering the advantages of high efficiency and energy saving. Secondly, it not only saves on the cooling system of the oil-free air compressor 1, but also solves the problem of excessively high exhaust temperature during the compression process, increasing the machine's service life and reducing production and operating costs. Thirdly, by using heat exchange instead of traditional electric heating to obtain high-temperature saturated steam, production and operating costs are further reduced, economic benefits are improved, and it is more efficient and energy-saving.

[0025] The working principle of the high-efficiency and energy-saving compressor system in this embodiment is as follows:

[0026] When the oil-free air compressor 1 is working, high-temperature and high-pressure energy storage exhaust is generated at the exhaust port 5. The energy storage exhaust is input into the first heat source channel 3 of the first-stage heat exchanger 2, and room temperature water is input into the first medium channel 4 of the first-stage heat exchanger 2. The room temperature water in the first medium channel 4 exchanges heat with the high-temperature energy storage exhaust in the first heat source channel 3. The energy storage exhaust after heat exchange and cooling is output from the cold end 9 of the first heat source channel 3, and the saturated water vapor after heat exchange is output from the hot end 7 of the first medium channel 4 of the first-stage heat exchanger 2. The saturated water vapor is supplied to the steam compressor 28 for use. Example

[0027] like Figure 2 As shown, the other structures in this embodiment are the same as those in Embodiment 1, except that the following technical features are added:

[0028] The secondary heat exchanger 10 is provided with a second heat source channel 11 and a second medium channel 12. The cold end 13 of the second medium channel 12 of the secondary heat exchanger 10 is used for inputting the air at normal temperature. The hot end 15 of the second heat source channel 11 of the secondary heat exchanger 10 is connected with the cold end 9 of the first heat source channel 3 of the primary heat exchanger 2, and is used for inputting the energy storage exhaust gas after the primary heat exchange in the primary heat exchanger 2. The cold end 16 of the second heat source channel 11 of the secondary heat exchanger 10 is used for outputting the energy storage exhaust gas after the secondary heat exchange in the secondary heat exchanger 10. The hot end 14 of the second medium channel 12 of the secondary heat exchanger 10 is connected with the air inlet 17 of the oil-free air compressor 1, and is used for outputting the air after the heat exchange in the secondary heat exchanger 10. The secondary heat exchanger 10 can be achieved by using the existing technology. After the energy storage exhaust gas discharged from the exhaust end of the oil-free air compressor 1 is heated to become the saturated water vapor, there is still excess heat. The excess heat is introduced into the secondary heat exchanger 10 to further heat the air of the oil-free air compressor 1. The heat is not wasted, but the waste heat is stored on the compressed gas again with the air and is returned to the primary heat exchanger 2 again. The heat generated by the oil-free air compressor 1 is recycled in the system, the energy utilization rate is high, and more sufficient saturated water vapor can be obtained.

[0029] The working principle of the high-efficiency energy-saving compressor system of the embodiment is as follows:

[0030] When the oil-free air compressor 1 works, the high-temperature and high-pressure energy storage exhaust gas is generated at the exhaust port 5 and is input into the first heat source channel 3 of the primary heat exchanger 2. The water at normal temperature is input into the first medium channel 4 of the primary heat exchanger 2. The water at normal temperature in the first medium channel 4 exchanges heat with the high-temperature energy storage exhaust gas in the first heat source channel 3. The energy storage exhaust gas after the heat exchange and the temperature reduction is output from the cold end 9 of the first heat source channel 3. The saturated water vapor after the heat exchange is output from the hot end 7 of the first medium channel 4 of the primary heat exchanger 2, and is provided for the steam compressor 28. In order to fully utilize the waste heat of the energy storage exhaust gas after the heat exchange and the temperature reduction, the energy storage exhaust gas after the heat exchange and the temperature reduction is further input into the second heat source channel 11 of the secondary heat exchanger 10, and exchanges heat with the air at normal temperature in the second medium channel 12 of the secondary heat exchanger 10. The waste heat is stored on the compressed gas again with the air. At the same time, the cold end 16 of the second heat source channel 11 of the secondary heat exchanger 10 outputs the energy storage exhaust gas after the further heat exchange and the temperature reduction. At this time, the heat stored in the energy storage exhaust gas has been mostly replaced by the water at normal temperature in the primary heat exchanger 2 and the air at normal temperature in the secondary heat exchanger 10, and the heat loss is very small. Embodiment

[0031] As Figure 3As shown, an efficient and energy-saving compressor system includes a primary compressor and a secondary compressor, the primary compressor is a water-injected oil-free air compressor 1, the secondary compressor is a steam compressor 28, and the system further includes a primary heat exchanger 2, the primary heat exchanger 2 is provided with a first heat source channel 3 and a first medium channel 4, the cold end 6 of the first medium channel 4 of the primary heat exchanger 2 is used for inputting normal temperature water, the hot end 8 of the first heat source channel 3 of the primary heat exchanger 2 is connected with the exhaust port 5 of the water-injected oil-free air compressor 1, and is used for inputting energy storage exhaust discharged from the exhaust end of the water-injected oil-free air compressor 1, the cold end 9 of the first heat source channel 3 of the primary heat exchanger 2 is used for outputting energy storage exhaust after heat exchange and cooling, and the hot end 7 of the first medium channel 4 of the primary heat exchanger 2 is connected with the steam compressor 28, and is used for outputting saturated water vapor after heat exchange and heating.

[0032] The efficient and energy-saving compressor system of the embodiment combines the water-injected oil-free air compressor 1 with the steam compressor 28, and uses the heat exchanger to make the high-temperature and high-pressure gas discharged from the water-injected oil-free air compressor 1 exchange heat with the low-temperature normal temperature water, so as to obtain saturated water vapor for the steam compressor 28; therefore, the heat generated in the compression process of the water-injected oil-free air compressor 1 is not directly discharged, but is converted into high-temperature water vapor required by the steam compressor 28 by using the first heat exchanger, the heat energy of the water-injected oil-free air compressor 1 is recycled and utilized, the energy utilization rate is improved, and the advantages of high efficiency and energy saving are achieved; secondly, not only the cooling system of the water-injected oil-free air compressor 1 is saved, but also the problem of excessively high exhaust temperature in the compression process of the water-injected oil-free air compressor 1 is solved, the service life of the machine is improved, and the production and use costs are reduced; thirdly, the high-temperature saturated water vapor is obtained by replacing the traditional electric heating mode with the heat exchange mode, the production and use costs are further reduced, the economic benefits are improved, and the system is more efficient and energy-saving.

[0033] The second heat exchanger 10 is provided with a second heat source channel 11 and a second medium channel 12, the cold end 13 of the second medium channel 12 of the second heat exchanger 10 is used for inputting the air at normal temperature, the hot end 15 of the second heat source channel 11 of the second heat exchanger 10 is communicated with the cold end 9 of the first heat source channel 3 of the first heat exchanger 2, and is used for inputting the energy storage exhaust gas after the primary heat exchange of the first heat exchanger 2, the cold end 16 of the second heat source channel 11 of the second heat exchanger 10 is used for outputting the energy storage exhaust gas after the secondary heat exchange of the second heat exchanger 10, and the hot end 14 of the second medium channel 12 of the second heat exchanger 10 is communicated with the air inlet 17 of the water injection type oil-free air compressor 1, and is used for outputting the air after the heat exchange of the second heat exchanger 10. Since the energy storage exhaust gas discharged from the exhaust end of the water injection type oil-free air compressor 1 may still have excess heat after heating the water into saturated water vapor, the excess heat is introduced into the second heat exchanger 10 again to heat the air of the water injection type oil-free air compressor 1, so that the heat is not wasted, and the waste heat is stored on the compressed gas again with the air and returns to the first heat exchanger 2, so that the heat generated by the water injection type oil-free air compressor 1 can be recycled in the system, the energy utilization rate is high, and more sufficient saturated water vapor can be obtained.

[0034] The water vapor separation assembly 18 is further provided with a water vapor mixture inlet 19, a liquid outlet 20 and a gas outlet 21, the water vapor mixture inlet 19 of the water vapor separation assembly 18 is communicated with the cold end 16 of the second heat source channel 11 of the second heat exchanger 10, and is used for separating the water vapor mixture discharged from the cold end 16 of the second heat source channel 11 to obtain pure high-pressure gas and filtered water; the water vapor separation assembly 18 can be obtained by using the prior art. The water injection type oil-free air compressor 1 is used to mix the compressed gas and the water into a water vapor mixture, and the specific heat capacity of the water vapor mixture is higher than that of the pure gas, so that the water injection type oil-free air compressor 1 can operate at a high pressure ratio and can overcome the harm of high exhaust gas temperature to the machine; since the water injection type oil-free air compressor 1 generates a water vapor mixture, the pure high-pressure gas and the filtered water can be separated after passing through the water vapor separation assembly 18.

[0035] The working principle of the high-efficiency energy-saving compressor system of the embodiment is as follows:

[0036] When the water-spray type oil-free air compressor 1 is working, high-temperature and high-pressure energy storage exhaust is generated at the exhaust port 5. This energy storage exhaust is a water-vapor mixture. The energy storage exhaust is input into the first heat source channel 3 of the first-stage heat exchanger 2, and room-temperature water is input into the first medium channel 4 of the first-stage heat exchanger 2. The room-temperature water in the first medium channel 4 exchanges heat with the high-temperature energy storage exhaust in the first heat source channel 3. The energy storage exhaust after heat exchange and cooling is output from the cold end 9 of the first heat source channel 3, and saturated water vapor after heat exchange is output from the hot end 7 of the first medium channel 4 of the first-stage heat exchanger 2. The saturated water vapor is supplied to the steam compressor 28. In order to make full use of the waste heat of the energy storage exhaust after heat exchange and cooling, the energy storage exhaust after heat exchange and cooling is further output... The gas enters the second heat source channel 11 of the secondary heat exchanger 10 and exchanges heat with the ambient temperature intake gas in the second medium channel 12 of the secondary heat exchanger 10. The residual heat is stored in the compressed gas again along with the intake gas. At the same time, the cold end 16 of the second heat source channel 11 of the secondary heat exchanger 10 outputs the energy storage exhaust gas after further heat exchange and cooling. At this time, most of the heat stored in the energy storage exhaust gas has been replaced by the ambient temperature water in the first heat exchanger 2 and the ambient temperature air in the secondary heat exchanger 10, and the heat loss is very small. Since the energy storage exhaust gas is a water vapor mixture, the cold end 16 of the second heat source channel 11 of the secondary heat exchanger 10 is also connected to the water vapor separation component 18 to separate the energy storage exhaust gas into pure high-pressure gas and filtered water. Example

[0037] like Figure 4 As shown, the other structures in this embodiment are the same as those in Embodiment 3, except that the following technical features are added:

[0038] It also includes a steam chamber 24 connecting the hot end 7 of the first medium channel 4 of the primary heat exchanger 2 and the steam compressor 28. The steam chamber 24 is equipped with a temperature detection component 25 and an auxiliary heating component 26. The liquid outlet 20 of the water vapor separation component 18 is connected to the steam chamber 24. The temperature detection component 25 and the auxiliary heating component 26 can be based on existing technology. This setup not only allows the steam chamber 24 to store saturated water vapor for use by the steam compressor 28, but also allows for further heating by the auxiliary heating component 26 in the steam chamber 24 when the temperature of the stored exhaust is insufficient to heat ordinary water to form saturated water vapor. The generation of saturated water vapor still mainly relies on the heat generated during the compression process of the water-spraying oil-free air compressor 1. The auxiliary heating component 26 only heats the water when the temperature detection component 25 detects that the temperature is insufficient, thus maintaining the advantages of high efficiency and energy saving, and also increasing the output of water vapor. In addition, the water in the water-spraying oil-free air compressor 1 can be recovered and added to the steam chamber 24 for heating to generate saturated water vapor, realizing the recycling of energy and further increasing the output of saturated water vapor.

[0039] The working principle of the high-efficiency and energy-saving compressor system in this embodiment is as follows:

[0040] The water-injected oil-free air compressor 1 works, and high-temperature and high-pressure energy storage exhaust is generated at the exhaust port 5. The energy storage exhaust is a water vapor mixture, and the energy storage exhaust is input into the first heat source channel 3 of the primary heat exchanger 2. The normal-temperature water is input into the first medium channel 4 of the primary heat exchanger 2. The normal-temperature water in the first medium channel 4 exchanges heat with the high-temperature energy storage exhaust in the first heat source channel 3. The energy storage exhaust after heat exchange and temperature reduction is output from the cold end 9 of the first heat source channel 3. The saturated water vapor after heat exchange is output from the hot end 7 of the first medium channel 4 of the primary heat exchanger 2. The saturated water vapor is provided for the steam compressor 28. In order to fully utilize the waste heat of the energy storage exhaust after heat exchange and temperature reduction, the energy storage exhaust after heat exchange and temperature reduction is further input into the second heat source channel 11 of the secondary heat exchanger 10, and exchanges heat with the normal-temperature intake air in the second medium channel 12 of the secondary heat exchanger 10. The waste heat is stored on the compressed gas again with the intake air. At the same time, the cold end 16 of the second heat source channel 11 of the secondary heat exchanger 10 outputs the energy storage exhaust after further heat exchange and temperature reduction. At this time, the heat stored in the energy storage exhaust has been mostly replaced by the normal-temperature water in the primary heat exchanger 2 and the normal-temperature air in the secondary heat exchanger 10, and the heat loss is very small. Since the energy storage exhaust is a water vapor mixture, the cold end 16 of the second heat source channel 11 of the secondary heat exchanger 10 is connected to the water vapor separation assembly 18 to separate the energy storage exhaust into pure high-pressure gas and filtered water. The water separated by the water vapor separation assembly 18 is also input into the steam chamber 24 for reuse. When the temperature of the energy storage exhaust is too low to heat ordinary water to form saturated water vapor, the hot end 7 of the first medium channel 4 can only produce hot water. At this time, the hot water produced by the hot end 7 of the first medium channel 4 is input into the steam chamber 24. The temperature detection assembly 25 in the steam chamber 24 will detect that the temperature is too low, and the auxiliary heating assembly 26 will work to heat the hot water into saturated water vapor. When the temperature of the energy storage exhaust can heat ordinary water to form saturated water vapor, the hot end 7 of the first medium channel 4 produces saturated water vapor. At this time, the saturated water vapor produced by the hot end 7 of the first medium channel 4 is input into the steam chamber 24 for storage, and the auxiliary heating assembly 26 does not work. Embodiment

[0041] As shown in Figure 5 , the other structures of the embodiment are the same as those of Embodiment Four, and the difference lies in that the following technical features are further added:

[0042] The cold end 6 of the first medium channel 4 of the primary heat exchanger 2 is further provided with a booster pump 27 for inputting normal-temperature water after pressure increase. The booster pump 27 can be of the prior art. Under normal circumstances, normal-temperature water can be heated to 100℃ saturated water vapor at most without positive pressure. However, after the water pressure is increased by the booster pump 27, saturated water vapor with a temperature higher than 100℃ can be obtained.

[0043] Any technical features in the above embodiments can be combined, and for the sake of brevity, not all possible combinations are described above, however, any combination of the technical features is deemed to be within the scope of the present specification.

[0044] The above merely shows the preferred embodiments of the present application, and of course cannot limit the scope of the present application, therefore, equivalent changes made according to the claims of the present application are still within the scope of the present application.

Claims

1. A high-efficiency and energy-saving compressor system, comprising a primary compressor and a secondary compressor, characterized in that: The primary compressor is an oil-free air compressor (1), the secondary compressor is a steam compressor (28), and a primary heat exchanger (2) is also included. The primary heat exchanger (2) is provided with a first heat source channel (3) and a first medium channel (4). The cold end (6) of the first medium channel (4) of the primary heat exchanger (2) is used to input room temperature water. The hot end (8) of the first heat source channel (3) of the primary heat exchanger (2) is connected to the exhaust port (5) of the oil-free air compressor (1) and is used to input the energy storage exhaust discharged from the exhaust port of the oil-free air compressor (1). The cold end (9) of the first heat source channel (3) of the primary heat exchanger (2) is used to output the energy storage exhaust after heat exchange and cooling. The hot end (7) of the first medium channel (4) of the primary heat exchanger (2) is connected to the steam compressor (28) and is used to output the saturated water steam after heat exchange and heating.

2. The high-efficiency and energy-saving compressor system according to claim 1, characterized in that: It also includes a secondary heat exchanger (10), which is provided with a second heat source channel (11) and a second medium channel (12). The cold end (13) of the second medium channel (12) of the secondary heat exchanger (10) is used to input ambient temperature intake air. The hot end (15) of the second heat source channel (11) of the secondary heat exchanger (10) is connected to the cold end (9) of the first heat source channel (3) of the primary heat exchanger (2) and is used to input the energy storage exhaust after the primary heat exchanger (2) has undergone initial heat exchange. The cold end (16) of the second heat source channel (11) of the secondary heat exchanger (10) is used to output the energy storage exhaust after the secondary heat exchanger (10) has undergone secondary heat exchange. The hot end (14) of the second medium channel (12) of the secondary heat exchanger (10) is connected to the air inlet (17) of the oil-free air compressor (1) and is used to output the intake air after heat exchange in the secondary heat exchanger (10).

3. The high-efficiency and energy-saving compressor system according to claim 2, characterized in that: The oil-free air compressor (1) is a water-spraying oil-free air compressor (1), and also includes a water vapor separation component (18). The water vapor separation component (18) is provided with a water vapor mixing inlet (19), a liquid outlet (20) and a gas outlet (21). The water vapor mixing inlet (19) of the water vapor separation component (18) is connected to the cold end (16) of the second heat source channel (11) of the secondary heat exchanger (10), and is used to separate the water vapor mixture discharged from the cold end (16) of the second heat source channel (11) to obtain pure high-pressure gas and filtered water.

4. The high-efficiency and energy-saving compressor system according to claim 1, characterized in that: It also includes a steam chamber (24) connecting the hot end (7) of the first medium channel (4) of the first stage heat exchanger (2) and the steam compressor (28), wherein a temperature detection component (25) and an auxiliary heating component (26) are provided in the steam chamber (24).

5. The high-efficiency and energy-saving compressor system according to claim 3, characterized in that: It also includes a steam chamber (24) connecting the hot end (7) of the first medium channel (4) of the first stage heat exchanger (2) and the steam compressor (28), wherein a temperature detection component (25) and an auxiliary heating component (26) are provided in the steam chamber (24), and the liquid outlet (20) of the water vapor separation component (18) is connected to the steam chamber (24).

6. The high-efficiency and energy-saving compressor system according to claim 1, characterized in that: The cold end (6) of the first medium channel (4) of the first-stage heat exchanger (2) is also equipped with a booster pump (27) for inputting pressurized room temperature water.

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